EP2725590A1 - Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci - Google Patents

Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci Download PDF

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Publication number
EP2725590A1
EP2725590A1 EP12190166.4A EP12190166A EP2725590A1 EP 2725590 A1 EP2725590 A1 EP 2725590A1 EP 12190166 A EP12190166 A EP 12190166A EP 2725590 A1 EP2725590 A1 EP 2725590A1
Authority
EP
European Patent Office
Prior art keywords
coil wire
support member
radial direction
height
front wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12190166.4A
Other languages
German (de)
English (en)
Other versions
EP2725590B1 (fr
Inventor
Guus Mertens
Hans De Brauwer
Peter Okkerse
Peter Dirk Jäger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Belgium BVBA
Original Assignee
Tyco Electronics Belgium EC BVBA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tyco Electronics Belgium EC BVBA filed Critical Tyco Electronics Belgium EC BVBA
Priority to EP12190166.4A priority Critical patent/EP2725590B1/fr
Priority to PCT/EP2013/071751 priority patent/WO2014063991A1/fr
Publication of EP2725590A1 publication Critical patent/EP2725590A1/fr
Application granted granted Critical
Publication of EP2725590B1 publication Critical patent/EP2725590B1/fr
Priority to US14/695,799 priority patent/US20150228404A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14Inductive couplings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/2823Wires
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/064Winding non-flat conductive wires, e.g. rods, cables or cords
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/02Coils wound on non-magnetic supports, e.g. formers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • H01F5/02Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/4902Electromagnet, transformer or inductor
    • Y10T29/49071Electromagnet, transformer or inductor by winding or coiling

Definitions

  • the invention relates to an improved coil wire support element for use in an inductive power transfer coupler and an inductive power transfer coupler incorporating same improved coil wire support element. Further, an improved manufacturing method of a coil wire support element is suggested in the invention.
  • Coil wire support elements are commonly known as integral parts of inductive power transfer couplers. Coil wire support elements may also be referred to as spool carriers or bobbins. There, the coil wire support elements provide for structural support to a coiled wire. The coiled wire enables to inductively transfer power between inductive power transfer couplers of same or similar kind. Specifically, coil wire support elements are used for coiling the wire in predefined geometries, as for instance, in coil wire sections of predefined length and height. The height of a coil wire section is varied according to the number of coil wire layers adjacently arranged on top of each other.
  • a coil wire layer is to be understood as an arrangement of coil wire that is coiled on a structural member in a same direction (i.e. where subsequent coil wire loops are laterally displaced to each other in a same direction).
  • two adjacent coil wire layers differ in that the coiling direction between a first coil wire layer and a second coil wire layer reverses. Assuming for example a cylindrical member on which the coil wire is to be coiled, subsequent coil wire loops of a first coil wire layer are laterally displaced to each other in a first axial direction of the cylindrical member, and coil wire loops of a second, overlying coil wire layer are laterally displaced to each other in a second, reversed axial direction.
  • a coil wire section is to be understood as an arrangement of coil wire in at least one coil wire layer of a predefined geometry.
  • the geometry of the coil wire section may be fixed by a structural member, on which the coil wire of the coil wire section is coiled, and by the member's side walls, which limit the length of the coil wire section.
  • the height of a coil wire section depends on the number of coil wire layers, and hence is defined by the arrangement of the coil wire, coiled on the support member in the at least one coil wire layer.
  • the coil wire support member provides structural support for coiling thereon the coil wire in the plurality of coil wire layers.
  • coil wire layers include a front and a back wall at the respective ends of the support member to provide lateral support for the coil wire during coiling of the plurality of coil wire layers.
  • the front and back wall also prevent from imperfections during coiling of the plurality of coil wire layers due to bonding thereof to the winding machine, e.g. the winding mandrel. Also, the front and back wall of the support member protect the coil wire layers from damage during the subsequent manufacturing steps, i.e. before the coil is mounted in a final product.
  • the front wall adds to the minimum distance at which the coil wire of one inductive power transfer coupler and another coil wire of the receptacle inductive power transfer coupler can be located.
  • the thicker the front wall of the coil wire support element the wider the space between the coils of interacting inductive power transfer couplers.
  • a wide space between the coils of interacting inductive power transfer couplers results in a poor inductive power transmission efficiency.
  • the front wall of the coil wire support element acts as a electromagnetic shielding to the electromotive force and may also for this reason have a disadvantageous effect on the inductive power transmission efficiency.
  • the proposed configuration of the coil wire support element of the invention allows for a reduction of the space between two interacting coils, e.g. in a wireless power transmission coupler system.
  • a coil wire support element which allows coiling on the support element coil wire layers in closer proximity to the front face of the coil wire support element.
  • the coil wire support element includes a support member capable of supporting a coil wire.
  • the coil wire is coiled in one or more coil wire layers onto the support member to form a coil wire section.
  • the coil wire section is confined by a front and a back wall, or, alternatively by a front and an additional intermediate wall of the support member.
  • the front and the back wall may be integrally manufactured with the support member, or, alternatively may be separately manufactured and later connected to the support member, e.g. by bonding, molding or by mechanical coupling.
  • the front and the back wall are arranged at the respective front and back ends of the support member and protrude in a radial direction.
  • an intermediate wall is included, it also protrudes in a radial direction.
  • the front and back wall or the front and the intermediate wall provide lateral support to the at least one coil wire layer in the coil wire section.
  • the radial direction is specified through the coiling of the coil wire layers.
  • the front wall may not only include the segment protruding in a radial direction but also include a respective segment protruding in the lateral direction.
  • a segment of the front wall protruding in the lateral direction may support or may connect the radial protruding segment of the front wall to the support member.
  • the height of the one or more coil wire layers, coiled in said one coil wire section on the support member is larger in the radial direction than the height of the segment of the front wall protruding in said radial direction from the support member.
  • the coil wire support element actually allows coiling on the support element coil wire layers in closer proximity to the front face of the coil wire support element.
  • a coil wire support element which allows reducing the height of a front wall in order to arrange coil wire layers on the support member in closer proximity to the front face of the coil wire support element.
  • the coil wire support element includes a support member capable of supporting a coil wire.
  • the coil wire is coiled in one or more coil wire layers onto the support member to form a coil wire section.
  • the coil wire section is confined by a front and a back wall, or, alternatively by a front and an additional intermediate wall of the support member.
  • the front and the back wall may be integrally manufactured with the support member, or, alternatively may be separately manufactured and later connected to the support member, e.g. by bonding, molding or mechanical coupling.
  • the front and the back wall are arranged at the respective front and back ends of the support member and protrude in a radial direction.
  • an intermediate wall is included, it also protrudes from the support member in a radial direction.
  • the front and back wall or the front and the intermediate wall provide lateral support to the at least one coil wire layer in one coil wire section.
  • the radial direction is specified through the coiling of the coil wire layers.
  • the front wall comprises a non-removable and a removable segment, wherein at least the removable segment of the front wall protrudes in the lateral direction.
  • the non-removable segment may only protrude in the lateral direction or may additionally protrude in the radial direction.
  • removal of the removable segment reduces the height of the front wall to the height of the non-removable segment of the front wall protruding in said radial direction from the support member.
  • the height of the one or more coil wire layers, coiled in said one coil wire section on the support member is larger in the radial direction than the height of the non-removable segment of the front wall protruding in said radial direction from the support member.
  • removal of the removable segment enables reducing the height of the front wall (i.e. to the height of the non-removable segment of the front wall) in order to arrange coil wire layers on the support member in closer proximity to the front face of the coil wire support element.
  • a coil wire support element comprising a support member for supporting a coil wire, at least one coil wire section formed of coil wire that is coiled on the support member in at least one coil wire layer, and at least one front and one back wall.
  • the front and the back wall are arranged at the respective ends of the support member and protrude from the support member in a radial direction for providing lateral support to parts of the at least one coil wire layer in one coil wire section.
  • the height of the at least one coil wire layer, coiled in said one coil wire section on the support member is larger in the radial direction than the height of the segment of the front wall protruding in said radial direction from the support member.
  • the total height of the n coil wire layers in said one coil wire section is larger in the radial direction than the height of the segment of the front wall protruding in said radial direction from the support member.
  • the total height of i, i ⁇ ⁇ 1,2,..., ( n - 1) ⁇ coil wire layer(s) in said one coil wire section is larger in the radial direction than the height of the segment of the front wall protruding in said radial direction from the support member.
  • the height of a segment of the back wall protruding from the support member in the radial direction is larger than the height of the segment of the front wall protruding from the support member in said radial direction.
  • the support element comprises an intermediate wall arranged to protrude in the radial direction from the support member between the front wall and back wall, whereas said one coil wire section is the first coil wire section formed of the coil wire between the front wall and the intermediate wall,
  • the support element comprises a second coil wire section formed of the coil wire that is coiled on the support member in at least one coil wire layer between the intermediate wall and the back wall, and the coil wire in the first coil wire section and the coil wire in the second coil wire section is electrically connected.
  • the number of the at least one coil wire layer, that is formed in the first coil wire section is greater than the number of the at least one coil wire layer, that is formed in the second coil wire section.
  • the height of the segment of the intermediate wall protruding from the support member in the radial direction is larger than the height of the segment of the front wall protruding from the support member in said radial direction, and optionally, the height of the segment of the intermediate wall protruding from the support member in the radial direction is larger than the height of the segment of the back wall protruding from the support member in the radial direction.
  • a coil wire support element comprising a support member for supporting a coil wire, at least one coil wire section formed of coil wire that is coiled on the support member in at least one coil wire layer, and at least one front and one back wall.
  • the front and one back wall are provided at the respective ends of the support member and protrude from the support member in a radial direction for providing lateral support to the at least one coil wire layer in one coil wire section.
  • the front wall comprises a non-removable and a removable segment, and the removal of the removable segment enables reducing the height of the front wall to the height of the non-removable segment of the front wall protruding in said radial direction from the support member.
  • the front wall includes a thinned section or a perforated section arranged as a predetermined breaking point for enabling breaking off the removable segment of the front wall.
  • the front wall includes at least one latching member or a thread arranged to form a detachable connection between the non-removable segment and the removable segment of the front wall.
  • said one coil wire section comprises a plurality of n , n ⁇ N coil wire layers coiled on the support member, the total height of the n coil wire layers in said one coil wire section s larger in the radial direction than the height of the non-removable segment of the front wall protruding in said radial direction from the support member.
  • the total height of i, i ⁇ ⁇ 1,2,..., ( n - 1) ⁇ coil wire layer(s) in said one coil wire section is larger in the radial direction than the height of the non-removable segment of the front wall protruding in said radial direction from the support member.
  • the height of a segment of the back wall protruding from the support member in the radial direction is larger than the height of the non-removable segment of the front wall protruding from the support member in said radial direction.
  • the support element further comprises an intermediate wall arranged to protrude in the radial direction from the support member between the front wall and back wall, whereas said one coil wire section is the first coil wire section formed of the coil wire between the front wall and the intermediate wall.
  • the support element further comprises a second coil wire section formed of the coil wire that is coiled on the support member in at least one coil wire layer between the intermediate wall and the back wall, and the coil wire in the first coil wire section and the coil wire in the second coil wire section is electrically connected.
  • the number of the at least one coil wire layer, that is formed in the first coil wire section is greater than the number of the at least one coil wire layer, that is formed in the second coil wire section.
  • the height of the segment of the intermediate wall protruding from the support member in the radial direction is larger than the height of the non-removable segment of the front wall protruding from the support member in said radial direction.
  • the height of the segment of the intermediate wall protruding from the support member in the radial direction is larger than the height of the segment of the back wall protruding from the support member in the radial direction.
  • an inductive power transfer coupler that comprises a coil wire support element according to one of the previously described embodiments.
  • a method for manufacturing a coil wire support element is suggested.
  • a support member is provided for supporting a coil wire in at least one coil wire section.
  • the support member includes at least one front and one back wall at the respective ends of the support member.
  • the front and the back wall protrude from the support member in a radial direction for providing lateral support to the coil wire of the at least one coil wire section.
  • a coil wire is coiled on the support member to form said one coil wire section arranged of at least one wire layer.
  • the front wall comprises a non-removable and a removable segment.
  • a coil wire support element 100 according to a first embodiment of the invention is shown.
  • Fig. 1a shows a sectional view of a coil wire support element.
  • Fig. 1b illustrates a cross-section of the coil wire support element of Fig. 1 a along the line A - A.
  • the coil wire support element 100 of this embodiment may be used for inductive power transfer in an inductive power transfer coupler as will become apparent from the later description and, hence, may be an integral part of said coupler.
  • the coil wire support element 100 of the embodiment shown in Fig. 1 a and 1 b comprises a support member 110 and a coil wire section 120.
  • the support member is configured to support a coil wire coiled thereon in the coil wire section 120.
  • the coil wire section 120 is formed of coil wire that is coiled on the support member in at least one coil wire layer.
  • the support member 110 is a tubular member with a cylindrical cross section.
  • the support member 110 allows for the coil wire to be coiled in the coil wire section 120 in at least one coil wire layer so that it rests on the outside of the support member 110.
  • the coil wire section 120 protrudes from the support member 110 in an outward direction.
  • the coil wire of the coil wire section 120 is coiled in loops around the support member 110 so that the electromotive force is induced with directivity between a front and a back end of the support member 110.
  • a front and a back end of the support member 110 may be defined as those surfaces of the support member 110 which are not covered by the coil wire section 120 and are located opposite to each other.
  • the arrangement of the coil wire in the coil wire section 120 specifies an axial direction of the coil wire support element 100, namely as a direction between a front and a back end of the support member 110.
  • a radial direction then defines directions perpendicular to the axial direction, i.e. directions perpendicular to the axis connecting the front and the back end of the support member 110.
  • a radial direction is pointing outwardly from the outer surface of the support member 110.
  • the coil wire section 120 is made of coil wire arranged around the support member 110 and protrudes from the support member 110 in a radial direction.
  • the term "radial direction” is defined on the basis of the loop-shaped arrangement of the coil wire in the coil wire section 120 and, hence, does not require a circular cross-section for the support member 110.
  • the term “radial direction” should not be understood as limiting the invention, as the “radial direction” may also be defined for support members 110 with a rectangular, polygonal or elliptical cross-section.
  • a front wall 130 and a back wall 140 are provided.
  • the front and back walls 130, 140 protrude in a radial direction from the support member.
  • the coil wire support element 100 includes an intermediate wall 150 arranged to protrude between the front wall 130 and the back wall 140 from the support member 110 in a radial direction. Specifically, in this configuration the front wall 130 and the intermediate wall 150 provide for lateral support to the coil wire arranged in coil wire layers to form the first coil wire section 120 and the intermediate wall 150 and the back wall 140 provide for lateral support to the coil wire arranged in coil wire layers to form the second coil wire section 160.
  • the coil wire of the first coil wire section 120 is electrically connected to the coil wire of the second coil wire section 160 in order to enhance the induced electromotive force. Further, the number of coil wire layers that are arranged in the first coil wire section 120 is greater than the number of coil wire layers that are arranged in the second coil wire section 160.
  • the coil wire of the first, bottommost coil wire layer in the coil wire section 120 borders on the front wall 130 and on the intermediate wall 150 so that the front wall 120 and the intermediate wall 150 provide lateral support for the first coil wire layer.
  • the coil wire section 120 may be formed of coil wire that is coiled around the support member 110 in at least one coil wire layer extending between the front and the back wall, so that the front and the back wall provide lateral support to part of the coil wire, e.g. the first, bottommost coil wire layer of the coil wire section 120.
  • the front wall 130, and optionally the back wall 140 or the intermediate wall 150, are provided according to this particular height configuration in order to provide for the effect of allowing coiling of at least one coil wire layer in closer proximity to the front face of the coil wire support element 100.
  • the height h2 of the back wall 140 i.e. the segment thereof that protrudes from the support member 110 in the radial direction
  • the height h1 of the front wall 130 i.e. the segment thereof that protrudes from the support member 110 in said radial direction.
  • the height h3 of the intermediate wall 150 i.e. the segment thereof that protrudes from the support member 110 in the radial direction
  • the height h1 of the front wall 130 i.e. the segment thereof that protrudes from the support member 110 in the radial direction
  • the height h3 of the intermediate wall 150 i.e. the segment thereof that protrudes from the support member 110 in the radial direction
  • the height h2 of the back wall 140 i.e. the segment thereof that protrudes from the support member 110 in the radial direction.
  • the front wall 130 is configured with a height h1 in the radial direction that is smaller than the height h3 of the coil wire layers in coil wire section 120.
  • the height h3 of the coil wire layers, coiled in said one coil wire section 120 on the support member 110 is larger in the radial direction than the height h1 of the segment of the front wall 130 protruding in said radial direction from the support member 110.
  • the last, outmost layer of the at least one coil wire layer in coil wire section 120 may project into the empty space on top of the front wall 130 and, hence, be in closer proximity to the front face of the coil wire support element 100.
  • front-most coil wire loops of the at least one coil wire section 120 can be coiled onto the support member in the first, bottommost coil wire layer and also can be coiled onto the upper surface of the front wall 130 in a subsequent coil wire layer, such that a front-most coil wire loop of this subsequent coil wire layer is in closer proximity to the front face of the coil wire support element 100.
  • the front of the second and the fourth coil wire layer in coil wire section 120 projects into the empty space on top of the front wall 130.
  • the front-most coil wire loop of the second coil wire layer is coiled onto the outer surface of the front wall 130 so as to be in close proximity to the front face of the coil wire support element 100.
  • the coil wire support element 100 allows for an improved inductive power transfer efficiency when used in an inductive power transfer coupler.
  • the term "height" is to be understood in the context of the invention as the length of a segment, of e.g. the front wall 130, protruding in the radial direction from the support member 110.
  • the outer surface of the support member 110 is a basis for the height of the front wall 130.
  • a portion of the front wall 130 providing for the structural connection with the support member 110 and corresponding to the frontal area of the support member 110 does not add to the height of the front wall in the meaning of the invention.
  • the definition of height for the front wall 130 refers to the same basis as the definition of height of the coil wires in the coil wire section 120, namely the basis being provided by support member 110.
  • the height of the front wall 130 is to be measured from the support member 110 in a radial direction and the height of the coil wire section 120 is also to be measured from the support member 110 in a radial direction.
  • a coil wire support element 100 includes in the coil wire section 120 only a single, first coil wire layer of coil wire coiled on the support member 110, this single, first coil wire layer is larger in a radial direction on the support member 110 than the height of the front wall 130 protruding in a radial direction from the support member 110.
  • a coil wire support element 100 includes in the coil wire section 120 a plurality of n, n ⁇ N coil wire layers of coil wire coiled on the support member 110, the total height of the n coil wire layers in said one coil wire section 120 is larger in the radial direction than the height of the segment of the front wall 130 protruding in said radial direction from the support member 110.
  • a coil wire support element 100 includes in the coil wire section 120 a plurality of n, n ⁇ N coil wire layers of coil wire coiled on the support member 110, the total height of i, i ⁇ ⁇ 1,2,..., ( n - 1) ⁇ coil wire layer(s) in said one coil wire section 120 is larger in the radial direction than the height of the segment of the front wall 130 protruding in said radial direction from the support member 110.
  • the back wall 140 includes an opening for guiding the coil wire away from the support element 110, e.g. to rearward placed circuitry when used in an inductive power transfer coupler.
  • the support member 110 includes a structural element (e.g. a notch or a protrusion) for determining/keying the rotational orientation for winding/coiling the coil wire on the support member.
  • a structural element e.g. a notch or a protrusion
  • the structural element allows specifying an assembly/manufacturing alignment for in between processes and handling.
  • the structural element may also be provided on the front wall 130 such that the assembly/manufacturing alignment is not determined until the flange is removed.
  • a coil wire support element 200 according to a second embodiment of the invention is shown.
  • Fig. 2a shows a sectional view of a coil wire support element.
  • Fig. 2b illustrates a cross-section of the coil wire support element of Fig. 1 a along the line A - A.
  • the coil wire support element 200 of the second embodiment comprises a support member 210 and a coil wire section 220.
  • the support member 210 is configured to support a coil wire coiled thereon in the coil wire section 220.
  • the coil wire section 220 is formed of coil wire that is coiled on the support member 210 in at least one coil wire layer.
  • the support member 210 is a tubular member with a cylindrical cross section.
  • the support member 210 allows for the coil wire to be coiled in the coil wire section 220 in at least one coil wire layer so that is rests on the outside of the support member 210.
  • the coil wire section 220 protrudes from the support member 210 in an outward direction.
  • the coil wire of the coil wire section 220 is coiled in loops around the support member 210 so that the electromotive force is induced with directivity between a front and a back end of the support member 210.
  • a front and a back end of the support member 210 may be defined as those surfaces of the support member 210 which are not covered by the coil wire section 220 and are located opposite to each other.
  • the arrangement of the coil wire in the coil wire section 220 specifies an axial direction of the coil wire support element 200, namely as a direction between a front and a back end of the support member 210.
  • a radial direction then defines directions perpendicular to the axial direction, i.e. directions perpendicular to the axis connecting the front and the back end of the support member 210.
  • a radial direction is pointing outwardly from the outer surface of the support member 210.
  • the coil wire section 220 is made of coil wire arranged around the support member 210 protrudes from the support member 210 in a radial direction.
  • a "radial direction" for the coil wire support member 210 is based on the loop-shaped arrangement of the coil wire in the coil wire section 220 and, hence, does not require a circular cross-section for the support member 210.
  • the term "radial direction” should not be understood as limiting the invention, as the "radial direction” may also be defined for support members 210 with a rectangular, polygonal or elliptical cross-section.
  • a front wall 230 and a back wall 240 are provided at the front and at the back end of the support member 210.
  • the front and back walls 230, 240 protrude in a radial direction from the support member.
  • the front end 230 of the coil wire support element 200 in this embodiment comprises a non-removable segment 232 and a removable segment 234 wherein removal of the removable segment 234 enables reducing the height of the front wall 230 to the height h1 of the non-removable segment 232 of the front wall 230 protruding in said radial direction from the support member 210.
  • the front wall 230 includes a thinned section or a perforated section arranged as a predetermined breaking point for enabling breaking off the removable segment 234 of the front wall 230.
  • the exemplary implementation of the coil wire support element 200 where the front wall 230 includes the thinned section arranged as a predetermined breaking point is illustrated in Fig. 3b .
  • the front wall 230 includes at least one latching member or a thread arranged to form a detachable connection between the non-removable segment 232 and the removable segment 234 of the front wall 230.
  • the exemplary implementation of the coil wire support element 200 where the front wall 230 includes the thread to form a detachable connection between the non-removable segment 232 and the removable segment 234 of the front wall is illustrated in Fig. 3a .
  • the coil wire support element 200 includes an intermediate wall 250 arranged to protrude from the support member 210 in a radial direction between the front wall 230 and the back wall 240.
  • the front wall 230 and the intermediate wall 250 provide for lateral support to coil wire arranged in coil wire layers to form the first coil wire section 220
  • the intermediate wall 250 and the back wall 240 provide for lateral support to the coil wire arranged in coil wire layers to form the second coil wire section 260.
  • the coil wire of the first coil wire section 220 is electrically connected to the coil wire of the second coil wire section 260 in order to enhance the induced electromotive force. Further, the number of coil wire layers that are arranged in the first coil wire section 220, is greater than the number of coil wire layers that are arranged in the second coil wire section 260.
  • the coil wire of the first, bottommost coil wire layer in the coil wire section 220 borders on the non-removable segment 232 of the front wall 230 and on the intermediate wall 250 so that the non-removable segment 232 of the front wall 220 and the intermediate wall 250 provide lateral support for the first coil wire layer.
  • the advantage of the configuration of the coil wire supporting element 200 is illustrated in Figs. 3a and 3b where the distance reduction after removal of the removable segment 234 of the front wall 230 is shown as length ⁇ X .
  • the coil wire of the coil wire section 220 can be located by the total length of ⁇ X in the axial direction at closer proximity to the front face of the coil wire support element 200.
  • the height h2 of the back wall 240 i.e. the segment thereof that protrudes from the support member 210 in the radial direction, is larger than the height h1 of the non-removable segment 232 of the front wall 230 protruding from the support member 210 in said radial direction.
  • the height h3 of the intermediate wall 250 i.e. the segment thereof that protrudes from the support member 210 in the radial direction
  • the height h3 of the intermediate wall 250 i.e. the segment thereof that protrudes from the support member 210 in the radial direction
  • the height h2 of the back wall 240 i.e. the segment thereof that protrudes from the support member 210 in the radial direction.
  • the non-removable segment 232 of the front wall 230 is configured with a height h1 in the radial direction that is smaller than the height h3 of the coil wire layers in coil wire section 320.
  • the height h3 of the coil wire layers, coiled in said one coil wire section 220 on the support member 210 is larger in the radial direction than the height h1 of the non-removable segment 232 of the front wall 230 protruding in said radial direction from the support member 210.
  • the last, outmost layer of the at least one coil wire layer in coil wire section 220 may project into the empty space on top of the front wall 230 and, hence, be in close proximity to the front face of the coil wire support element 200.
  • the front of the second and the fourth coil wire layer in coil wire section 220 (assuming an inclining numbering of coil wire layers starting from the bottommost coil wire layer coiled on the support member 210) project into the empty space on top of the non-removable segment 232 of the front wall 230.
  • a coil wire support element 200 includes in the coil wire section 220 only a single, first coil wire layer of coil wire coiled on the support member 210, this single, first coil wire layer is larger in a radial direction on the support member 210 than the height of the non-removable segment 232 of the front wall 230 protruding in a radial direction from the support member 210.
  • a coil wire support element 200 includes in the coil wire section 220 a plurality of n, n ⁇ N coil wire layers of coil wire coiled on the support member 210, the total height of the n coil wire layers in said one coil wire section 220 is larger in the radial direction than the height of the non-removable segment 232 of the front wall 230 protruding in said radial direction from the support member 210.
  • a coil wire support element 200 includes in the coil wire section 220 a plurality of n, n ⁇ N coil wire layers of coil wire coiled on the support member 210, the total height of i, i ⁇ ⁇ 1,2,..., ( n - 1) ⁇ coil wire layer(s) in said one coil wire section 220 is larger in the radial direction than the height of the non-removable segment 232 of the front wall 230 protruding in said radial direction from the support member 210.
  • the support member 210 includes a structural element (e.g. a notch or a protrusion) for determining/keying the rotational orientation for winding/coiling the coil wire on the support member.
  • a structural element e.g. a notch or a protrusion
  • the structural element allows specifying an assembly/manufacturing alignment for in between processes and handling.
  • the structural element may also be provided on the front wall 230 such that the assembly/manufacturing alignment is not determined until the removable segment 234 is removed.
  • the back wall 240 includes an opening for guiding the coil wire away from the support element 210, e.g. to rearward placed circuitry when used in an inductive power transfer coupler.
  • a method for manufacturing a coil wire support element 200 comprises the steps of: providing a support member 210 for supporting a coil wire in at least one coil wire section 220, the support member 210 including at least one front and one back wall 230, 240 at the respective ends of the support member 210, and the front and back walls 230, 240 protruding from the support member 210 in a radial direction for providing lateral support to the coil wire of the at least one coil wire section 220; coiling, on the support member 210, a coil wire to form said one coil wire section 210 arranged in at least one wire layer; and wherein the front wall 230 comprises a non-removable 232 and a removable segment 234; and the method comprises the additional step of removing, after coiling, the removable segment 234 of the front wall 230 to reduce the height of the front wall 230 to the height of the non-removable segment 232 protruding in said radial direction from the support member 210.
  • a coil wire support element 400 according to a variation of the second embodiment of the invention is shown. Further, Fig. 4b illustrates a cross-section of the coil wire support element of Fig. 4a along the line A - A.
  • the coil wire support element 400 of Fig. 4a and 4b is based on the coil wire support element 200 of Fig. 2a and 2b where corresponding parts are given corresponding reference numerals and terms. The detailed description of corresponding parts has been omitted for reasons of conciseness.
  • the coil wire support element 400 of Fig. 4a and 4b differs from the coil wire support element 200 in that the front wall 430 includes a non-removable segment 232 which corresponds to that non-removable segment 232 of the coil wire support element 200 and a plurality of removable segments 434.
  • the front wall 430 includes a thinned section or a perforated section arranged at a predetermined breaking point for enabling breaking off the removable segment 434 from the front wall 430.
  • the thinned section or the perforated section is shorter so as to reduce the force necessary for removal of the removable segment 430 from the front wall 430.
  • FIG. 5 a sectional view of the coil wire support element according to one of the first and second embodiments in an inductive power transfer coupler 500 and a receptacle coupler 600 is shown.
  • the coil wire support element included in the inductive power transfer coupler 500 may be realized according to the coil wire support element 100 of the first embodiment. Similarly, the coil wire support element included in the inductive power transfer coupler 500 may also be realized according to the coil wire support element 200 or 400 of Figs. 2a and 2b , or 4a and 4b , where the respective removable segment 234 or removable segments 434 have been removed prior to assembly in the inductive power transfer coupler 500.
  • the receptacle coupler 600 may be an inductive power transfer coupler of same or similar kind to the inductive power transfer coupler 500.
  • the coil wire support element is surrounded at the outside with a non-conductive cover layer 570 to ensure that the coupler has a sufficient level of mechanical robustness/stability.
  • the non-conductive cover layer 570 may be realized as an overmold.
EP12190166.4A 2012-10-26 2012-10-26 Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci Active EP2725590B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP12190166.4A EP2725590B1 (fr) 2012-10-26 2012-10-26 Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci
PCT/EP2013/071751 WO2014063991A1 (fr) 2012-10-26 2013-10-17 Élément de support de fil de bobine, procédé de son fabrication et coupleur de transfert de puissance inductive l'incorporant
US14/695,799 US20150228404A1 (en) 2012-10-26 2015-04-24 Coil Wire Support Element, Manufacturing Method Thereof, and Inductive Power Transfer Coupler Incorprationg The Same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12190166.4A EP2725590B1 (fr) 2012-10-26 2012-10-26 Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci

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EP2725590A1 true EP2725590A1 (fr) 2014-04-30
EP2725590B1 EP2725590B1 (fr) 2015-01-28

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EP12190166.4A Active EP2725590B1 (fr) 2012-10-26 2012-10-26 Élément de support de fil de bobine, son procédé de fabrication et un coupleur de transfert d'énergie inductif corportant celui-ci

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US (1) US20150228404A1 (fr)
EP (1) EP2725590B1 (fr)
WO (1) WO2014063991A1 (fr)

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CN111428337A (zh) * 2020-02-17 2020-07-17 北京理工大学 用于磁浮列车无线充电系统的磁耦合器的设计方法及系统

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EP0609109A1 (fr) * 1993-01-28 1994-08-03 SAGEM ALLUMAGE Société Anonyme Bobinot d'enroulement secondaire de bobine d'allumage pour moteur à combustion interne
WO1995012912A1 (fr) * 1993-11-01 1995-05-11 Stridsberg Innovation Ab Moteur electrique et sa fabrication
JPH11299132A (ja) * 1998-04-07 1999-10-29 Shibaura Mechatronics Corp 電動機のステータコア
JP2001008395A (ja) * 1999-06-17 2001-01-12 Matsushita Seiko Co Ltd 電動機の固定子及びその製造方法
US20020093269A1 (en) * 2001-01-16 2002-07-18 Harter Bernard G. Slot area undercut for segmented stators
JP2003009444A (ja) * 2001-06-22 2003-01-10 Mosutetsuku:Kk ステーター用コア部材、ステーターコア捲き線部材、スペーサー、コイル製造方法、コイル製造装置、及び成形機
US20030051616A1 (en) * 2001-09-18 2003-03-20 Kinley John Stanley Printer compact coil winding system
US20030209627A1 (en) * 2002-05-10 2003-11-13 Keisuke Kawano Apparatus and method for winding multi-layer coil in trapezoidal winding space
US20030214197A1 (en) * 2002-05-20 2003-11-20 De Luca Kenneth M. Method and apparatus for sealing an inner diameter of a segmented stator
US20040189136A1 (en) * 2003-03-31 2004-09-30 Kolomeitsev Sergei F. Stator design for permanent magnet motor with combination slot wedge and tooth locator
JP2006296146A (ja) * 2005-04-14 2006-10-26 Aichi Elec Co 電動機の固定子
WO2007077674A1 (fr) * 2005-12-26 2007-07-12 Toyota Jidosha Kabushiki Kaisha Procede d'enroulement et bobinage
DE202007007579U1 (de) * 2007-03-16 2007-08-09 Egston System Electronics Eggenburg Gmbh Spule mit einer Maschinenlagenwicklung
US20080290979A1 (en) * 2007-05-23 2008-11-27 Yuzuru Suzuki Bobbin, coil-wound bobbin, and method of producing coil-wound bobbin
DE102007029306A1 (de) * 2007-06-22 2008-12-24 Robert Bosch Gmbh Elektromagnetisch erregbare Spule
US20090085422A1 (en) * 2005-11-11 2009-04-02 Sumitomo Electric Industries, Ltd. Motor Core Component and Motor Component
EP2169803A2 (fr) * 2008-09-30 2010-03-31 Canon Kabushiki Kaisha Moteur sans balai à rotor interne
US20100225433A1 (en) * 2009-03-05 2010-09-09 Schleifring Medical Systems, Inc. Wire winding device for a high power level transformer

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0609109A1 (fr) * 1993-01-28 1994-08-03 SAGEM ALLUMAGE Société Anonyme Bobinot d'enroulement secondaire de bobine d'allumage pour moteur à combustion interne
WO1995012912A1 (fr) * 1993-11-01 1995-05-11 Stridsberg Innovation Ab Moteur electrique et sa fabrication
JPH11299132A (ja) * 1998-04-07 1999-10-29 Shibaura Mechatronics Corp 電動機のステータコア
JP2001008395A (ja) * 1999-06-17 2001-01-12 Matsushita Seiko Co Ltd 電動機の固定子及びその製造方法
US20020093269A1 (en) * 2001-01-16 2002-07-18 Harter Bernard G. Slot area undercut for segmented stators
JP2003009444A (ja) * 2001-06-22 2003-01-10 Mosutetsuku:Kk ステーター用コア部材、ステーターコア捲き線部材、スペーサー、コイル製造方法、コイル製造装置、及び成形機
US20030051616A1 (en) * 2001-09-18 2003-03-20 Kinley John Stanley Printer compact coil winding system
US20030209627A1 (en) * 2002-05-10 2003-11-13 Keisuke Kawano Apparatus and method for winding multi-layer coil in trapezoidal winding space
US20030214197A1 (en) * 2002-05-20 2003-11-20 De Luca Kenneth M. Method and apparatus for sealing an inner diameter of a segmented stator
US20040189136A1 (en) * 2003-03-31 2004-09-30 Kolomeitsev Sergei F. Stator design for permanent magnet motor with combination slot wedge and tooth locator
JP2006296146A (ja) * 2005-04-14 2006-10-26 Aichi Elec Co 電動機の固定子
US20090085422A1 (en) * 2005-11-11 2009-04-02 Sumitomo Electric Industries, Ltd. Motor Core Component and Motor Component
WO2007077674A1 (fr) * 2005-12-26 2007-07-12 Toyota Jidosha Kabushiki Kaisha Procede d'enroulement et bobinage
DE202007007579U1 (de) * 2007-03-16 2007-08-09 Egston System Electronics Eggenburg Gmbh Spule mit einer Maschinenlagenwicklung
US20080290979A1 (en) * 2007-05-23 2008-11-27 Yuzuru Suzuki Bobbin, coil-wound bobbin, and method of producing coil-wound bobbin
DE102007029306A1 (de) * 2007-06-22 2008-12-24 Robert Bosch Gmbh Elektromagnetisch erregbare Spule
EP2169803A2 (fr) * 2008-09-30 2010-03-31 Canon Kabushiki Kaisha Moteur sans balai à rotor interne
US20100225433A1 (en) * 2009-03-05 2010-09-09 Schleifring Medical Systems, Inc. Wire winding device for a high power level transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111428337A (zh) * 2020-02-17 2020-07-17 北京理工大学 用于磁浮列车无线充电系统的磁耦合器的设计方法及系统
CN111428337B (zh) * 2020-02-17 2022-04-12 北京理工大学 用于磁浮列车无线充电系统的磁耦合器的设计方法及系统

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US20150228404A1 (en) 2015-08-13
WO2014063991A1 (fr) 2014-05-01

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